Don’t forget striking down voter-id!
I was about to post that same thing. SCOTUS effectively blocked an attempt by Arizona and Kansas to require voter ID by rejecting the case.
One article put it this way: By rejecting a joint appeal by the states, the high court left in place a November 2014 ruling by the 10th U.S. Circuit Court of Appeals. That appeals court decided that the U.S. Election Assistance Commission, a federal agency that oversees changes to state voter registration procedures, was not required to grant the states' request that proof of citizenship be added to registration requirements.
By leaving that 10th Circuit ruling in place, they have pulled the rug out from under us.